# Elastic agent wont start fleet server after upgrade
**URL:** https://discuss.elastic.co/t/elastic-agent-wont-start-fleet-server-after-upgrade/356072
**Category:** Elastic Agent
**Created:** [March 25, 2024, 5:40am UTC](https://discuss.elastic.co/t/elastic-agent-wont-start-fleet-server-after-upgrade/356072 "2024-03-25T05:40:32Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@jtrapozi](https://discuss.elastic.co/u/jtrapozi)
#### Post date: [March 25, 2024, 5:40am UTC](https://discuss.elastic.co/t/elastic-agent-wont-start-fleet-server-after-upgrade/356072/1 "2024-03-25T05:40:32Z")
I represent an Australian school that uses Elastic for logging and we really love the product.
We have a single ELK server with a single ELK agent and Fleet server all on the same host running 8.10.1
After a recent upgrade of the ELK stack and Fleet server, the fleet server never restarted, it now just hangs in (STARTING) mode forever with no logs giving any indication of why.
┌─ fleet
│ └─ status: (STARTING)
└─ elastic-agent
└─ status: (HEALTHY) Running
In the GUI it simply shows as offline.
I've tried updating the Agent to a fairly recent version (8.12.2) and this hasn't assisted. I'm relucent to un-install and re-install as I have a number of integrations that were challenging to setup.
Can any please give any advise on how I can troubleshoot this? I've spent two hours going through forum posts and haven't been able to find anything relevant on where to start.
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [April 22, 2024, 5:41am UTC](https://discuss.elastic.co/t/elastic-agent-wont-start-fleet-server-after-upgrade/356072/2 "2024-04-22T05:41:27Z")
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